decrepitus
From LSJ
ψυχῆς ἀγῶνα τὸν προκείμενον πέρι δώσων → to stand the appointed trial for his life, to stand the appointed struggle for life and death
Latin > English (Lewis & Short)
dē-crĕpĭtus: a, um, adj. crepo (lit., noiseless; applied to old people, who creep about like shadows),
I very old, decrepit (mostly ante-class.): vetulus, decrepitus senex, Plaut. Merc. 2, 2, 43; so, senex, id. ib. 20; id. Asin. 5, 2, 13; Ter. Ad. 5, 8, 16: senex, Vulg. 2 Par. 36, 17: leo, Prud. Ham. 561: inter decrepitos me numera et extrema languentes, Sen. Ep. 26: aetas (bestiolae), * Cic. Tusc. 1, 39 fin.>
